我有一个仅适用于一个实例的小部件。
我遇到的问题是，如果我在页面上有一个小部件实例，它可以正常工作。如果页面上有多个实例，则只有一个实例可用。第二个实例不起作用......
您可以查看此页面以获取示例http://fullylinked.com/advert.php
从我的故障排除中，我注意到以下情况 1.第二个实例的放置ID不会传递给脚本。 2.即使使用默认的展示位置ID，我也会收到错误消息 ＆＃34;未捕获的ReferenceError：未定义jsonpCallback＆＃34;。 不幸的是，jsonpCalback被定义，因为第一个脚本工作..
请在这里是我的代码.. 小工具......
<script placementID = "37" src="placement.js" type="text/javascript"> </script>
<div id="widget-container_37"></div>
----这一行下面的第二个实例-------
<script placementID = "36" src="placement.js" type="text/javascript"></script><div id="widget-container_36"></div>
现在这里是.JS文件
(function() {
// Localize jQuery variable
var jQuery;
/******** Load jQuery if not present *********/
if (window.jQuery === undefined || window.jQuery.fn.jquery !== '1.4.2') {
var script_tag = document.createElement('script');
script_tag.setAttribute("type","text/javascript");
script_tag.setAttribute("src",
"http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js");
if (script_tag.readyState) {
script_tag.onreadystatechange = function () { // For old versions of IE
if (this.readyState == 'complete' || this.readyState == 'loaded') {
scriptLoadHandler();
}
};
} else {
script_tag.onload = scriptLoadHandler;
}
// Try to find the head, otherwise default to the documentElement
(document.getElementsByTagName("head")[0] || document.documentElement).appendChild(script_tag);
} else {
// The jQuery version on the window is the one we want to use
jQuery = window.jQuery;
main();
}
/******** Called once jQuery has loaded ******/
function scriptLoadHandler() {
// Restore $ and window.jQuery to their previous values and store the
// new jQuery in our local jQuery variable
jQuery = window.jQuery.noConflict(true);
// Call our main function
main();
}
/******** Our main function ********/
function main() {
jQuery(document).ready(function($) {
/******* Load CSS *******/
/** var css_link = $("<link>", {
rel: "stylesheet",
type: "text/css",
href: "style.css"
});
css_link.appendTo('head');
/**** get host name ***/
var site_name = window.location.hostname;
/****** get user ID******/
var this_js_script = $('script[src*=placement]'); // get file name..*/
var placementID = this_js_script.attr('placementID');
/**var placementID = document.getElementById("adblabla_2").getAttribute("placementID");**/
if (typeof placementID === "undefined" ) {
var placementID = '23';
}
/******* Load HTML *******/
$.ajax({
url: 'processors/processor.php?placementID='+placementID,
data: {name: 'Chad', site: site_name},
dataType: 'jsonp',
jsonp: 'callback',
jsonpCallback: 'jsonpCallback',
success: function(data){
//alert(placementID);
$('#widget-container_'+placementID).html(data.message);
}
});
});
function jsonpCallback(data){
$('#widget-container_2').text(data.message);
}
}
})();
答案 0 :(得分：0)
原因是另一个我认为，你的代码已经被封装了，所以它没有调用两次相同的main函数，但它找到两次相同的脚本标记，因此得到了错误的参数。 http://www.2ality.com/2014/05/current-script.html 那么你可以试试这段代码：
(function () {
// Localize jQuery variable
var jQuery,
//get current script
currentScript = document.currentScript || (function () {
var scripts = document.getElementsByTagName('script');
return scripts[scripts.length - 1];
})();
/******** Load jQuery if not present *********/
if (window.jQuery === undefined || window.jQuery.fn.jquery !== '1.4.2') {
var script_tag = document.createElement('script');
script_tag.setAttribute("type", "text/javascript");
script_tag.setAttribute("src",
"http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js");
if (script_tag.readyState) {
script_tag.onreadystatechange = function () { // For old versions of IE
if (this.readyState == 'complete' || this.readyState == 'loaded') {
scriptLoadHandler();
}
};
} else {
script_tag.onload = scriptLoadHandler;
}
// Try to find the head, otherwise default to the documentElement
(document.getElementsByTagName("head")[0] || document.documentElement).appendChild(script_tag);
} else {
// The jQuery version on the window is the one we want to use
jQuery = window.jQuery;
main();
}
/******** Called once jQuery has loaded ******/
function scriptLoadHandler() {
// Restore $ and window.jQuery to their previous values and store the
// new jQuery in our local jQuery variable
jQuery = window.jQuery.noConflict(true);
// Call our main function
main();
}
/******** Our main function ********/
function main() {
jQuery(document).ready(function ($) {
/******* Load CSS *******/
/** var css_link = $("<link>", {
rel: "stylesheet",
type: "text/css",
href: "style.css"
});
css_link.appendTo('head');
/**** get host name ***/
var site_name = window.location.hostname;
/****** get user ID******/
var this_js_script = $(currentScript); // get file name..*/
var placementID = this_js_script.attr('placementID');
/**var placementID = document.getElementById("adblabla_2").getAttribute("placementID");**/
if (typeof placementID === "undefined") {
var placementID = '23';
}
/******* Load HTML *******/
$.ajax({
url: 'processors/processor.php?placementID=' + placementID,
data: {name: 'Chad', site: site_name},
dataType: 'jsonp',
jsonp: 'callback',
success: function (data) {
//alert(placementID);
$('#widget-container_' + placementID).html(data.message);
}
});
});
function jsonpCallback(data) {
$('#widget-container_2').text(data.message);
}
}
})();